This paper presents the conceptual background and an over view of Service Management Architecture (SMA). SMA is a plan for representing a general view of the telecom provider's service production and management solutions. Service management and network architecture has become a necessity for both service providers and vendors. The services offered by providers are becoming more and more adaptable and extensive, while networks are being built up fiom a variety of heterogeneous systems. Vendors need some means to help their understanding of the problems that their customers, ie. providers, need to solve. An understanding of the customer's problems is necessary so that the right products can be developed and the complexity of implementations can be controlled. The primary goal of SMA is a complete, overall representation of the provider's solutions. This includes the existing and future network component implementations. The use of SMA will lead to the implementation of compatible network components.
{"title":"Service management architecture","authors":"J. Skubic, H. Burwall","doi":"10.1109/ISS.1990.768723","DOIUrl":"https://doi.org/10.1109/ISS.1990.768723","url":null,"abstract":"This paper presents the conceptual background and an over view of Service Management Architecture (SMA). SMA is a plan for representing a general view of the telecom provider's service production and management solutions. Service management and network architecture has become a necessity for both service providers and vendors. The services offered by providers are becoming more and more adaptable and extensive, while networks are being built up fiom a variety of heterogeneous systems. Vendors need some means to help their understanding of the problems that their customers, ie. providers, need to solve. An understanding of the customer's problems is necessary so that the right products can be developed and the complexity of implementations can be controlled. The primary goal of SMA is a complete, overall representation of the provider's solutions. This includes the existing and future network component implementations. The use of SMA will lead to the implementation of compatible network components.","PeriodicalId":277204,"journal":{"name":"International Symposium on Switching","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126270919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the Belgian Broadband experiment, aiming at fully ATM oriented broadband demonstration network by 1992, one of the building blocks is the Subscribers' Premises Network (SPN), consisting of NT1 and NT2 of the CCITT reference model, and interworking units to narrowband ISDN and LANs. This paper analyses the needs of a wide range of subscribers with emphasis on a common terminal interface for every environment, in order to obtain terminal portability. The advantages of full ATM for the SPN environment are outlined. A concept to achieve this is described, using a two-tier architecture for modular sizing, and interworking units to interface with the non-ATM environment. The two-tier architecture offers a solution in two levels, being a Broadband Backbone Network BBN, surrounded by a variable number of satelites, the Terminal Distribution Network TDN, to which terminals are connected directly. For this TDN active and passive solutions are compared The paper then describes hardware and software structure of the Belgian SPN, including operation and maintenance aspects and man-machine interface. Some block diagrams and concepts will be further explained.
{"title":"Subscribers' premises networks for the belgian broadband experiment","authors":"A. De Smedt, A. De Vleeschouwer, R. Theeuws","doi":"10.1109/ISS.1990.768716","DOIUrl":"https://doi.org/10.1109/ISS.1990.768716","url":null,"abstract":"In the Belgian Broadband experiment, aiming at fully ATM oriented broadband demonstration network by 1992, one of the building blocks is the Subscribers' Premises Network (SPN), consisting of NT1 and NT2 of the CCITT reference model, and interworking units to narrowband ISDN and LANs. This paper analyses the needs of a wide range of subscribers with emphasis on a common terminal interface for every environment, in order to obtain terminal portability. The advantages of full ATM for the SPN environment are outlined. A concept to achieve this is described, using a two-tier architecture for modular sizing, and interworking units to interface with the non-ATM environment. The two-tier architecture offers a solution in two levels, being a Broadband Backbone Network BBN, surrounded by a variable number of satelites, the Terminal Distribution Network TDN, to which terminals are connected directly. For this TDN active and passive solutions are compared The paper then describes hardware and software structure of the Belgian SPN, including operation and maintenance aspects and man-machine interface. Some block diagrams and concepts will be further explained.","PeriodicalId":277204,"journal":{"name":"International Symposium on Switching","volume":"53 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126289235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Private networks for voice and data are becoming increasingly sophisticated. Using standard ISDN communication inter faces, enhanced signaling and increased processor/switch interactions, private networks are evolving to support a variety of value-added applications. This paper reviews the present capabilities of PBX-based private networks, describes important developments in the areas of PBX and related ISDN network functionality, and illustrates how these developments will be applied to private networks in the future to allow increasingly useful business applications.
{"title":"Private networks: evolution to value-added applications","authors":"C. F. Foard, J. A. Newell, G.J. Ryva","doi":"10.1109/ISS.1990.768708","DOIUrl":"https://doi.org/10.1109/ISS.1990.768708","url":null,"abstract":"Private networks for voice and data are becoming increasingly sophisticated. Using standard ISDN communication inter faces, enhanced signaling and increased processor/switch interactions, private networks are evolving to support a variety of value-added applications. This paper reviews the present capabilities of PBX-based private networks, describes important developments in the areas of PBX and related ISDN network functionality, and illustrates how these developments will be applied to private networks in the future to allow increasingly useful business applications.","PeriodicalId":277204,"journal":{"name":"International Symposium on Switching","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125921205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. D. Huensch, L.A. Bergen, D. A. Christenson, A. Gana, M. Garzia, D.P. Smith
In the development of new releases of large software systems, the software is evaluated by various testing organizations toward the end of the software development interval. This paper de scribes the use of software reliability models and reports on metrics derivedfiom these models in managing the development resources in this "end game". Fault density and failure intensity are two metrics used both to monitor development process capabilities and also to measure customer satisfaction with the product. During the planning phase, targets are set based on customer expectations, to minimize faults remaining and the rate of failure occurrences at release. Reports are then generated regularly for the project managers showing the fault finding progress, the estimated number of faulls remaining, a 'rating' of each software component and estimates of current and future failure intensity. The "rating" of each component is based on the likelihood of reaching the fault density target at the release of the software system. The amount of time needed to reach the fault density and failure intensity targets, as well as the resources needed are provided by the reliability models. This information can then be used to allocate resources to those areas of the system where they would be most fruitful.
{"title":"Managing the final phases of software development using software reliability modeling","authors":"G. D. Huensch, L.A. Bergen, D. A. Christenson, A. Gana, M. Garzia, D.P. Smith","doi":"10.1109/ISS.1990.770112","DOIUrl":"https://doi.org/10.1109/ISS.1990.770112","url":null,"abstract":"In the development of new releases of large software systems, the software is evaluated by various testing organizations toward the end of the software development interval. This paper de scribes the use of software reliability models and reports on metrics derivedfiom these models in managing the development resources in this \"end game\". Fault density and failure intensity are two metrics used both to monitor development process capabilities and also to measure customer satisfaction with the product. During the planning phase, targets are set based on customer expectations, to minimize faults remaining and the rate of failure occurrences at release. Reports are then generated regularly for the project managers showing the fault finding progress, the estimated number of faulls remaining, a 'rating' of each software component and estimates of current and future failure intensity. The \"rating\" of each component is based on the likelihood of reaching the fault density target at the release of the software system. The amount of time needed to reach the fault density and failure intensity targets, as well as the resources needed are provided by the reliability models. This information can then be used to allocate resources to those areas of the system where they would be most fruitful.","PeriodicalId":277204,"journal":{"name":"International Symposium on Switching","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129759412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper proposes the configuration of the Intelligent Digital Mobile Communications Network which is based on the hierarchical function arrangement. The network is layered to the intelligent layer and the transport layer And each layer is also layered to several sub-layers. The network has a capability which guarantees the mobility between plural mobile communications networks. The MSSP (multi-switch simultaneous paging) technique is applied in metropolitan areas to simultaneously page the mobile station through plural switch units in a location area. Moreover, this paper describes the digital mobile subscriber line signalling configuration applied to the digital mobile subscriber line and the mobility guarantee capability of the personal telecommunications numbers in the mobile communications network considering the evolution to the PTN service.
{"title":"Intelligent digital mobile communications network architecture","authors":"A. Nakajima, M. Eguchi, T. Arita, H. Takeda","doi":"10.1109/ISS.1990.768725","DOIUrl":"https://doi.org/10.1109/ISS.1990.768725","url":null,"abstract":"This paper proposes the configuration of the Intelligent Digital Mobile Communications Network which is based on the hierarchical function arrangement. The network is layered to the intelligent layer and the transport layer And each layer is also layered to several sub-layers. The network has a capability which guarantees the mobility between plural mobile communications networks. The MSSP (multi-switch simultaneous paging) technique is applied in metropolitan areas to simultaneously page the mobile station through plural switch units in a location area. Moreover, this paper describes the digital mobile subscriber line signalling configuration applied to the digital mobile subscriber line and the mobility guarantee capability of the personal telecommunications numbers in the mobile communications network considering the evolution to the PTN service.","PeriodicalId":277204,"journal":{"name":"International Symposium on Switching","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132065315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper presents an approach to implementing new services via an advanced attached processor interface to a switching system, considering the needs of both Telecommunications Serv- ice Providers and switching system vendors. This interface provides a level of switching system access and control that meets many of today's needs, while taking into account the realities of the real-time nature of switch processing. First, the needs for service creation capability by other than the switching system vendor are described, Then the strategic direction of using an interface between a switching system and an attached processor to implement new services is presented. We identify the dimensions of attached processor service capabilities using service examples and the characteristics and tradeoffs for points along these dimensions. We conclude with a recommendation that the most attractive alternative is an interface that yields significant service creation capabilities without extensive coupling to the switching system.
{"title":"The reauties of service creation on switching systems through attached processors","authors":"W. L. Honig, B. G. Prieve","doi":"10.1109/ISS.1990.768707","DOIUrl":"https://doi.org/10.1109/ISS.1990.768707","url":null,"abstract":"This paper presents an approach to implementing new services via an advanced attached processor interface to a switching system, considering the needs of both Telecommunications Serv- ice Providers and switching system vendors. This interface provides a level of switching system access and control that meets many of today's needs, while taking into account the realities of the real-time nature of switch processing. First, the needs for service creation capability by other than the switching system vendor are described, Then the strategic direction of using an interface between a switching system and an attached processor to implement new services is presented. We identify the dimensions of attached processor service capabilities using service examples and the characteristics and tradeoffs for points along these dimensions. We conclude with a recommendation that the most attractive alternative is an interface that yields significant service creation capabilities without extensive coupling to the switching system.","PeriodicalId":277204,"journal":{"name":"International Symposium on Switching","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134641074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Interim Broadband Network (IBM) of Deutsche Bun-despost Telekom (DBP TELEKOM) is a logical step in the development from the innovative optical-fibre technology to a network for individual broadband communication. Having established a total of 16 broadband exchanges connected by an extensive, supraregional optical-fibre trunk network and having implemented optical-fibre lines in many local net works, DBP TELEKOM put into operation the world's largest switched optical-fibre networkfor broadband applications in the field of individual communications in 1989. According to the present technical concept the IBN has a capacity of about 1000 to 1500 subscribers.
{"title":"The interim broadband network of deutsche blindespost telekom","authors":"W. Gerfen","doi":"10.1109/ISS.1990.768714","DOIUrl":"https://doi.org/10.1109/ISS.1990.768714","url":null,"abstract":"The Interim Broadband Network (IBM) of Deutsche Bun-despost Telekom (DBP TELEKOM) is a logical step in the development from the innovative optical-fibre technology to a network for individual broadband communication. Having established a total of 16 broadband exchanges connected by an extensive, supraregional optical-fibre trunk network and having implemented optical-fibre lines in many local net works, DBP TELEKOM put into operation the world's largest switched optical-fibre networkfor broadband applications in the field of individual communications in 1989. According to the present technical concept the IBN has a capacity of about 1000 to 1500 subscribers.","PeriodicalId":277204,"journal":{"name":"International Symposium on Switching","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132753763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This Paper presents how to find quality parameters, which can be used for evaluation of precondidons and quality during early Project Phases. More emphasis is put on parameters measuring human and Project factors in addition to traditional metrics relating to product structure. A set of parameters is used in the project start andlor in the beginning of the subsequent design Phases to defect risk and threat aspects early enough. Examples of parameters given and the method used for evolution of e. g. personnel competence is also presented. Some examples describing the use of this method in connection with real projects will clarify that this method also covers discussions of adjustment actions in order to improve chances for success.
{"title":"A method for analysis of preconditions and quauty in telecommunication switching system software projects","authors":"J. Hirvensalo","doi":"10.1109/ISS.1990.770115","DOIUrl":"https://doi.org/10.1109/ISS.1990.770115","url":null,"abstract":"This Paper presents how to find quality parameters, which can be used for evaluation of precondidons and quality during early Project Phases. More emphasis is put on parameters measuring human and Project factors in addition to traditional metrics relating to product structure. A set of parameters is used in the project start andlor in the beginning of the subsequent design Phases to defect risk and threat aspects early enough. Examples of parameters given and the method used for evolution of e. g. personnel competence is also presented. Some examples describing the use of this method in connection with real projects will clarify that this method also covers discussions of adjustment actions in order to improve chances for success.","PeriodicalId":277204,"journal":{"name":"International Symposium on Switching","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115788375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We propose a new optical muhicast switching system based on a two-phase contention resolution algorithm This architec ture may simultaneously support packet switching, and circuat channel emulation. It can handle time-multiplexed variable bit rate random access packets and reserved access packets in a single framework that incorporates unicast and multicast switching. We present the overall switch architecture, its optical device requirements, and possible implementation schemes. Performance enhancements through the addition of multiple tracks are discussed which indicate the flexibility inherent in this design. Results of an analysis of the throughput and switch performance are discussed.
{"title":"A broadband optical multicast switch","authors":"T.T. Lee, M. Goodman, E. Arthurs","doi":"10.1109/ISS.1990.765705","DOIUrl":"https://doi.org/10.1109/ISS.1990.765705","url":null,"abstract":"We propose a new optical muhicast switching system based on a two-phase contention resolution algorithm This architec ture may simultaneously support packet switching, and circuat channel emulation. It can handle time-multiplexed variable bit rate random access packets and reserved access packets in a single framework that incorporates unicast and multicast switching. We present the overall switch architecture, its optical device requirements, and possible implementation schemes. Performance enhancements through the addition of multiple tracks are discussed which indicate the flexibility inherent in this design. Results of an analysis of the throughput and switch performance are discussed.","PeriodicalId":277204,"journal":{"name":"International Symposium on Switching","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116505458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"24 months of commercial isdn experience","authors":"F. Blome, A. Hamich","doi":"10.1109/ISS.1990.766632","DOIUrl":"https://doi.org/10.1109/ISS.1990.766632","url":null,"abstract":"","PeriodicalId":277204,"journal":{"name":"International Symposium on Switching","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116595726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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